Li Meng, Dong Yanli, Wang Qianqian, Li Zhi, Wu Qiuhua
College of Science, Hebei Agricultural University, Baoding 071001, China.
College of Science, Hebei Agricultural University, Baoding 071001, China.
Food Chem. 2025 Nov 15;492(Pt 2):145451. doi: 10.1016/j.foodchem.2025.145451. Epub 2025 Jul 11.
Herein, two porous organic polymers, triazine functionalized POP (H-CC-POP) as well as triazine and hydroxyl bifunctionalized POP (OH-CC-POP), were prepared for the first time. They were utilized as sorbents for solid-phase extraction (SPE) of neonicotinoid insecticides (NIs). Compared to H-CC-POP, the OH-CC-POP delivered excellent adsorption capacity for NIs through hydrogen bonding and π-π conjugation interactions. A OH-CC-POP based SPE in conjunction with liquid chromatography-mass spectrometry was employed to detect NIs in honey samples. Under optimal conditions, the established OH-CC-POP based method provides a good linear range of 0.70-120 ng g, with coefficients of determination ranging from 0.9940 to 0.9990. A low limit of detection of NIs in honey samples is obtained to be 0.20-0.80 ng g. The method recoveries, measured at three spiking levels, are 82.3-118 %, with a relative standard deviation of lower than 9.7 %. The developed method shows good application prospects for the detection of NIs in complex matrices.
在此，首次制备了两种多孔有机聚合物，即三嗪官能化的多孔有机聚合物（H-CC-POP）以及三嗪和羟基双官能化的多孔有机聚合物（OH-CC-POP）。它们被用作新烟碱类杀虫剂（NIs）固相萃取（SPE）的吸附剂。与H-CC-POP相比，OH-CC-POP通过氢键和π-π共轭相互作用对NIs具有出色的吸附能力。采用基于OH-CC-POP的固相萃取结合液相色谱-质谱法检测蜂蜜样品中的NIs。在最佳条件下，所建立的基于OH-CC-POP的方法具有0.70 - 120 ng g的良好线性范围，测定系数在0.9940至0.9990之间。蜂蜜样品中NIs的检测限低至0.20 - 0.80 ng g。在三个加标水平下测得的方法回收率为82.3 - 118%，相对标准偏差低于9.7%。所开发的方法在复杂基质中检测NIs方面显示出良好的应用前景。
